Liquid level detection device based on video

Abstract

The utility model relates to the technical field of liquid level detection, in particular to a video-based liquid level detection device, which comprises a bottom plate, a sewage cylinder fixed above the bottom plate, a display screen body arranged on the right side of the sewage cylinder and arranged on the top surface of the bottom plate, a slot arranged on the top surface of the sewage cylinder, and a measuring cylinder fixed on the inner bottom surface of the sewage cylinder, the measuring cylinder penetrates through the insertion groove in the top face of the sewage cylinder and extends to the position above the sewage cylinder, a floating ball liquid level meter is installed in the measuring cylinder, and a plurality of installation grooves communicated with an inner cavity of the measuring cylinder and located in the sewage cylinder are formed in the surface of the left side of the measuring cylinder. According to the utility model, the liquid level of sewage in the sewage cylinder can be detected by arranging the measuring cylinder, the floating ball liquid level meter and the plurality of filter plates, and the left side surfaces of the plurality of filter plates can be brushed by arranging the brushing mechanism, so that the liquid level detection is prevented from being influenced by blockage caused by adhesion of impurities such as floating oil to the plurality of filter plates; and the detection precision of the liquid level is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid level detection, in particular to a video-based liquid level detection device. Background Art

[0002] In the process of domestic and sewage treatment, sewage is usually stored in sewage pools. It is necessary to detect the liquid levels in various sewage pools, septic tanks, sewage lift pump stations, rainwater collection pools, and various corrosive water pools, and clean the sewage pool after the liquid level in the sewage pool reaches a certain height. Therefore, it is necessary to use a sewage pool liquid level detection device to measure the liquid level.

[0003] The patent with publication number CN219064630U discloses a high-temperature resistant float level gauge, including a level gauge body, the level gauge body includes a connecting flange, a controller arranged at the top of the connecting flange, an insertion rod arranged at the middle of the bottom end of the connecting flange, a hollow float arranged on the outside of the insertion rod for sliding up and down, and an upper limit seat and a lower limit seat respectively arranged at the top and bottom ends of the insertion rod, the outer wall of the insertion rod is coated with an anti-corrosion and high-temperature resistant coating and the inner wall of the insertion rod is provided with a vacuum layer.

[0004] Although the high temperature resistant float level gauge has a vacuum layer on the inner wall of the plug rod, and achieves heat insulation of the liquid between the outer wall of the plug rod and the inner wall of the detection inner tube through the vacuum layer, and reduces the problem of heat conduction to the internal circuit of the plug rod and damage to the circuit when the plug rod detects hotter liquids, and the corrosion resistance and heat resistance of the outer wall of the plug rod are increased by the anti-corrosion and high temperature resistant coating on the outer wall of the plug rod, thereby increasing the service life of the plug rod and the hollow float for liquid level detection, the float level gauge does not have a filtering structure inside several liquid inlets and a structure for brushing the filtering structure. Impurities such as floating oil adhere to the hollow float and affect the measurement accuracy of the entire float level gauge. Utility Model Content

[0005] The purpose of the utility model is to provide a video-based liquid level detection device to solve the problem that the float level meter proposed in the above-mentioned background technology has no filtering structure inside several liquid inlets and no structure for brushing the filtering structure, and impurities such as floating oil adhere to the hollow float and affect the measurement accuracy of the entire float level meter.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A video-based liquid level detection device, comprising a bottom plate, a sewage barrel is fixed above the bottom plate, a display screen body located on the right side of the sewage barrel is installed on the top surface of the bottom plate, a slot is provided on the top surface of the sewage barrel, a measuring barrel is fixed on the inner bottom surface of the sewage barrel, the measuring barrel passes through the slot on the top surface of the sewage barrel and extends to the top of the sewage barrel, a floating ball liquid level gauge is installed inside the measuring barrel, a plurality of mounting grooves connected to the inner cavity of the measuring barrel and located inside the sewage barrel are provided on the left surface of the measuring barrel, filter plates are embedded inside the plurality of mounting grooves on the left surface of the measuring barrel, and further comprising:

[0008] A scrubbing mechanism is arranged inside the sewage barrel and is used for scrubbing the left side surfaces of several filter plates. The scrubbing mechanism includes a rotating column rotatably connected to the top surface of the sewage barrel, and the bottom end of the rotating column extends to the inside of the sewage barrel near the top. The scrubbing mechanism also includes a screw coaxially fixed to the bottom end of the rotating column and rotatably connected to the inner bottom surface of the sewage barrel, a connecting rod threadedly connected to the screw and in an L-shape, a plurality of brush plates fixed to the right side surface of the cross bar end of the connecting rod and used for scrubbing the left side surfaces of several filter plates, two pulleys located above the sewage barrel and used for driving the rotating column to rotate, and a motor installed on the top surface of the sewage barrel and used for driving the two pulleys to rotate, the connecting rod is slidably connected to the inner wall of the sewage barrel, and the two pulleys are connected by belt transmission.

[0009] As a preferred embodiment, the scrubbing mechanism further includes a rotating shaft coaxially connected to the output shaft of the motor, and the two pulleys are coaxially fixed on the rotating column and the outer wall of the rotating shaft respectively.

[0010] As a preferred embodiment, a guide groove is provided on the inner wall of the sewage barrel, and a guide block slidably connected to the guide groove on the inner wall of the sewage barrel is fixed to the rear surface of the vertical rod end of the connecting rod.

[0011] As a preferred embodiment, the right side surface of the brush plate is tightly fitted with the left side surface of the filter plate, and the positions of the brush plate and the filter plate correspond and their sizes are matched.

[0012] As a preferred embodiment, a water inlet funnel connected to its inner cavity is fixed on the top surface of the sewage barrel, a water outlet pipe connected to its inner cavity is fixed on the outer wall of the sewage barrel near the bottom end, a water inlet valve is installed on the outer wall of the water inlet funnel tube body, and a water outlet valve is installed on the outer wall of the water outlet pipe.

[0013] As a preferred embodiment, the scrubbing mechanism further includes a protection box fixed on the top surface of the sewage barrel, the motor is located inside the protection box, and the rotating shaft passes through the top surface of the protection box.

[0014] As a preferred embodiment, the transverse cross-sectional shape of the guide groove on the inner wall of the sewage tank is a convex shape, and the shape of the guide block is a convex shape that matches the shape of the guide groove on the inner wall of the sewage tank.

[0015] As a preferred embodiment, the measuring cylinder and the rotating column are both provided with sealing rings at the contacting parts with the sewage cylinder, and the pipe body of the water inlet funnel and the contacting parts with the sewage cylinder are also provided with sealing rings.

[0016] As a preferred embodiment, an anti-skid plate matching its shape is fixed to the bottom end of the base plate, and the thickness of the anti-skid plate is 2-6 cm.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The utility model can detect the liquid level of sewage in the sewage cylinder by arranging a measuring cylinder, a floating ball liquid level gauge and a plurality of filter plates. By arranging a plurality of filter plates, the sewage entering the measuring cylinder can be filtered to prevent impurities from affecting the measurement accuracy of the floating ball liquid level gauge. By arranging a brushing mechanism, the left surface of a plurality of filter plates can be brushed to prevent impurities such as floating oil from adhering to a plurality of filter plates to cause blockage and affect the liquid level detection, thereby improving the detection accuracy of the liquid level;

[0019] 2. The utility model sets a display screen body on the top surface of the bottom plate, and the float level meter transmits the liquid level signal to the external PLC, and the external PLC transmits the liquid level signal to the display screen body, so that the liquid level information inside the sewage tank can be displayed in the form of an image. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of the sewage barrel in the utility model;

[0022] Figure 3 This is a schematic diagram of the internal structure of the float level gauge in the utility model;

[0023] Figure 4 It is a partial exploded view of the utility model;

[0024] Figure 5 It is a schematic diagram of a local structure in the utility model;

[0025] Figure 6 It is a schematic diagram of the overall structure of the brushing mechanism in the utility model;

[0026] Figure 7 The local explosion of the brushing mechanism in the utility model Figure 1;

[0027] Figure 8 The local explosion of the brushing mechanism in the utility model Figure 2 .

[0028] The meaning of each number in the figure is:

[0029] 1. Bottom plate; 2. Anti-skid plate; 3. Sewage cylinder; 4. Display screen body; 5. Measuring cylinder; 6. Float level gauge; 7. Brushing mechanism; 71. Rotating column; 72. Screw; 73. Connecting rod; 74. Guide block; 75. Brush plate; 76. Belt; 77. Protection box; 78. Pulley; 79. Motor; 710. Rotating shaft; 8. Water inlet funnel; 9. Water outlet pipe; 10. Filter plate; 11. Water inlet valve; 12. Water outlet valve. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] See also Figure 1-Figure 8 The utility model provides a technical solution: a video-based liquid level detection device, including a bottom plate 1, a sewage barrel 3 is fixed on the top of the bottom plate 1, a display screen body 4 is installed on the top surface of the bottom plate 1 and is located on the right side of the sewage barrel 3, a slot is provided on the top surface of the sewage barrel 3, a measuring barrel 5 is fixed on the inner bottom surface of the sewage barrel 3, the measuring barrel 5 passes through the slot on the top surface of the sewage barrel 3 and extends to the top of the sewage barrel 3, a floating ball liquid level gauge 6 is installed inside the measuring barrel 5, a plurality of mounting grooves connected to the inner cavity of the measuring barrel 5 and located inside the sewage barrel 3 are provided on the left side surface of the measuring barrel 5, and filter plates 10 are embedded inside the plurality of mounting grooves on the left side surface of the measuring barrel 5, and also includes:

[0032] The scrubbing mechanism 7 is arranged inside the sewage barrel 3 and is used to scrub the left side surfaces of several filter plates 10. The scrubbing mechanism 7 includes a rotating column 71 rotatably connected to the top surface of the sewage barrel 3, and the bottom end of the rotating column 71 extends to the inside of the sewage barrel 3 near the top. The scrubbing mechanism 7 also includes a screw 72 coaxially fixed to the bottom end of the rotating column 71 and rotatably connected to the inner bottom surface of the sewage barrel 3, a connecting rod 73 threadedly connected to the screw 72 and in an L-shaped shape, a plurality of brush plates 75 fixed to the right side surface of the cross rod end of the connecting rod 73 and used to scrub the left side surfaces of several filter plates 10, two pulleys 78 located above the sewage barrel 3 and used to drive the rotating column 71 to rotate, and a plurality of brush plates 75 fixed to the right side surface of the cross rod end of the connecting rod 73 and used to scrub the left side surfaces of several filter plates 10. The motor 79 is rotated by the pulley 78, the connecting rod 73 is slidably connected to the inner wall of the sewage tank 3, and the two pulleys 78 are connected by the belt 76. The liquid level of the sewage inside the sewage tank 3 can be detected by arranging the measuring tube 5, the float level gauge 6 and a plurality of filter plates 10. The left surface of the plurality of filter plates 10 can be scrubbed by arranging the brushing mechanism 7 to prevent floating oil and other impurities from adhering to the plurality of filter plates 10 to cause blockage and affect the liquid level detection, thereby improving the detection accuracy of the liquid level. The float level gauge 6 transmits the liquid level signal to the external PLC, and the external PLC transmits the liquid level signal to the display screen body 4, thereby displaying the liquid level information inside the sewage tank 3 in the form of an image.

[0033] In this embodiment, the brushing mechanism 7 also includes a rotating shaft 710 coaxially connected to the output shaft of the motor 79, and two pulleys 78 are coaxially fixed on the outer walls of the rotating column 71 and the rotating shaft 710, respectively, which can smoothly drive the two pulleys 78 to rotate, and then smoothly drive the rotating column 71 to rotate.

[0034] In addition, a guide groove is provided on the inner wall of the sewage tank 3, and a guide block 74 is fixed on the rear surface of the vertical rod end of the connecting rod 73, which is slidably connected to the guide groove on the inner wall of the sewage tank 3, and can guide the movement of the connecting rod 73, and further guide the movement of several brush plates 75.

[0035] Furthermore, the right side surface of the brush plate 75 fits tightly with the left side surface of the filter plate 10 , and the positions of the brush plates 75 and the filter plates 10 correspond and their sizes match, so that several brush plates 75 can smoothly brush several filter plates 10 .

[0036] Furthermore, a water inlet funnel 8 connected to the inner cavity of the sewage barrel 3 is fixed on the top surface thereof, a water outlet pipe 9 connected to the inner cavity of the sewage barrel 3 is fixed on the outer wall thereof near the bottom end, an inlet valve 11 is installed on the outer wall of the inlet funnel 8 tube body, and a water outlet valve 12 is installed on the outer wall of the outlet pipe 9, so that sewage can be smoothly added into the sewage barrel 3, and the sewage in the sewage barrel 3 can also be smoothly discharged.

[0037] Specifically, the scrubbing mechanism 7 also includes a protection box 77 fixed on the top surface of the sewage barrel 3, the motor 79 is located inside the protection box 77, and the rotating shaft 710 passes through the top surface of the protection box 77, which can protect the motor 79 and thus extend the service life of the motor 79.

[0038] More specifically, the transverse cross-sectional shape of the guide groove on the inner wall of the sewage barrel 3 is convex, and the shape of the guide block 74 is convex to match the shape of the guide groove on the inner wall of the sewage barrel 3, which can make the connection between the guide block 74 and the guide groove on the inner wall of the sewage barrel 3 tighter, and indirectly make the plurality of brush plates 75 more stable during movement.

[0039] It is worth noting that the measuring cylinder 5 and the rotating column 71 are provided with sealing rings at the contact parts with the sewage cylinder 3, and the tube body of the water inlet funnel 8 and the water outlet pipe 9 are also provided with sealing rings at the contact parts with the sewage cylinder 3, which can increase the sealing performance of the entire device and prevent leakage.

[0040] It is worth noting that an anti-skid plate 2 matching its shape is fixed to the bottom end of the base plate 1, and the thickness of the anti-skid plate 2 is 2-6 cm, preferably 3 cm in this article, so as to increase the friction between the entire device and the ground, thereby making the entire device more stable during operation.

[0041] Finally, it should be noted that the display screen body 4, float level gauge 6, motor 79 and other components involved in the utility model are all universal standard parts or components known to technical personnel in this field, and their structures and principles are all known to technical personnel in this field through technical manuals or through conventional experimental methods. In the idle space of this device, all the above-mentioned electrical components, which refer to power elements, electrical components, and compatible controllers and power supplies, are connected through wires. The specific connection means should refer to the working principle of the utility model. The electrical connection between each electrical component is completed in a sequential working order, and the detailed connection means are all well-known technologies in the field.

[0042] In the specific use of this embodiment, when the liquid level inside the sewage tank 3 changes, the float level meter 6 can detect the liquid level in the sewage tank 3, and the float level meter 6 transmits the liquid level signal to the external PLC at the same time, and the external PLC transmits the liquid level signal to the display body 4, so that the liquid level information inside the sewage tank 3 can be displayed in the form of an image;

[0043] When the left side surfaces of several filter plates 10 need to be scrubbed, the motor 79 is first started through the external PLC. The output shaft of the motor 79 rotates to drive the rotating shaft 710 coaxially connected thereto to rotate. The rotating shaft 710 rotates to drive the pulley 78 coaxially fixed thereto on the same side to rotate. The rotation of the pulley 78 drives another pulley 78 connected thereto through a belt 76 to rotate. The rotation of the other pulley 78 drives the rotating column 71 coaxially fixed thereto to rotate. The rotation of the rotating column 71 drives the screw 72 coaxially fixed thereto to rotate. The rotation of the screw 72 drives the connecting rod 73 threadedly connected thereto to move. The connecting rod 73 moves under the guidance of the guide block 74 and the guide groove on the inner wall of the sewage barrel 3. The movement of the connecting rod 73 drives the movement of several brush plates 75 fixed thereto. When the several brush plates 75 move from the inside of the sewage barrel 3 near the top to the inside of the sewage barrel 3 near the bottom, the output shaft of the motor 79 is reversed by controlling the external PLC. According to the above, the output shaft of the motor 79 is reversed so that the several brush plates 75 can move upward. When the several brush plates 75 move from the inside of the sewage barrel 3 near the bottom to the inside of the sewage barrel 3 near the top, the output shaft of the motor 79 is controlled by the external PLC to rotate forward. The above operation is repeated, so that the several brush plates 75 can make a linear reciprocating motion inside the sewage barrel 3. During the movement, the several brush plates 75 can further brush several filter plates 10.

[0044] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A video-based liquid level detection device, comprising a base plate (1), characterized in that: A sewage cylinder (3) is fixed above the bottom plate (1), a display screen body (4) is installed on the top surface of the bottom plate (1) and is located on the right side of the sewage cylinder (3), a slot is provided on the top surface of the sewage cylinder (3), a measuring cylinder (5) is fixed on the inner bottom surface of the sewage cylinder (3), the measuring cylinder (5) passes through the slot on the top surface of the sewage cylinder (3) and extends to the top of the sewage cylinder (3), a floating ball level gauge (6) is installed inside the measuring cylinder (5), a plurality of mounting grooves are provided on the left surface of the measuring cylinder (5) which are connected to the inner cavity thereof and are located inside the sewage cylinder (3), filter plates (10) are embedded inside the plurality of mounting grooves on the left surface of the measuring cylinder (5), and further comprising: A scrubbing mechanism (7) is arranged inside a sewage barrel (3) and is used to scrub the left side surfaces of a plurality of filter plates (10). The scrubbing mechanism (7) comprises a rotating column (71) rotatably connected to the top surface of the sewage barrel (3), the bottom end of the rotating column (71) extending to the inside of the sewage barrel (3) near the top end, and the scrubbing mechanism (7) further comprises a screw rod (72) coaxially fixed to the bottom end of the rotating column (71) and rotatably connected to the inner bottom surface of the sewage barrel (3), and a connecting rod (72) threadedly connected to the screw rod (72) and having an L-shaped shape. 3), a plurality of brush plates (75) fixed to the right side surface of the cross bar end of the connecting rod (73) and used for brushing the left side surfaces of the plurality of filter plates (10), two pulleys (78) located above the sewage barrel (3) and used for driving the rotating column (71) to rotate, and a motor (79) installed on the top surface of the sewage barrel (3) and used for driving the two pulleys (78) to rotate, the connecting rod (73) being slidably connected to the inner wall of the sewage barrel (3), and the two pulleys (78) being connected by a belt (76).

2. The video-based liquid level detection device according to claim 1, characterized in that: The scrubbing mechanism (7) further comprises a rotating shaft (710) coaxially connected to the output shaft of the motor (79), and the two pulleys (78) are coaxially fixed on the outer wall of the rotating column (71) and the rotating shaft (710), respectively.

3. The video-based liquid level detection device according to claim 1, characterized in that: The inner wall of the sewage barrel (3) is provided with a guide groove, and a guide block (74) slidably connected to the guide groove on the inner wall of the sewage barrel (3) is fixed on the rear side surface of the vertical rod end of the connecting rod (73).

4. The video-based liquid level detection device according to claim 1, characterized in that: The right side surface of the brush plate (75) is tightly fitted with the left side surface of the filter plate (10), and the positions of the brush plate (75) and the filter plate (10) correspond and their sizes are matched.

5. The video-based liquid level detection device according to claim 1, characterized in that: A water inlet funnel (8) connected to the inner cavity of the sewage barrel (3) is fixed on the top surface thereof, a water outlet pipe (9) connected to the inner cavity of the sewage barrel (3) is fixed near the bottom end of the outer wall thereof, a water inlet valve (11) is installed on the outer wall of the water inlet funnel (8) tube body, and a water outlet valve (12) is installed on the outer wall of the water outlet pipe (9).

6. The video-based liquid level detection device according to claim 2, characterized in that: The scrubbing mechanism (7) further comprises a protection box (77) fixed on the top surface of the sewage barrel (3); the motor (79) is located inside the protection box (77), and the rotating shaft (710) passes through the top surface of the protection box (77).

7. The video-based liquid level detection device according to claim 3, characterized in that: The transverse cross-sectional shape of the guide groove on the inner wall of the sewage barrel (3) is in the shape of a convex letter, and the shape of the guide block (74) is in the shape of a convex letter that matches the shape of the guide groove on the inner wall of the sewage barrel (3).

8. The video-based liquid level detection device according to claim 5, characterized in that: The contact portions of the measuring cylinder (5) and the rotating column (71) with the sewage cylinder (3) are both provided with sealing rings, and the contact portions of the pipe body of the water inlet funnel (8) and the water outlet pipe (9) with the sewage cylinder (3) are also provided with sealing rings.

9. The video-based liquid level detection device according to claim 1, characterized in that: An anti-skid plate (2) matching the shape of the bottom plate (1) is fixed to the bottom end thereof, and the thickness of the anti-skid plate (2) is 2-6 cm.

Images